kenb.co.jp - robtex.com
kenb.co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.230.253.89🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | webltw89.alpha-mail.jp | ||||||
| NS | kotetsu.alpha-lt.net ⭐ | ||||||
| A | 157.205.252.6🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns01.alpha-mail.jp | ||||||
| NS | amdns03.alpha-mail.jp | ||||||
| A | 216.230.254.112🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| NS | tsukuba.aics.ne.jp | ||||||
| A | 157.205.252.7🇯🇵 AICS157.205.0.0/16 PACNET (proxy-registered route object) | ||||||
| PTR | amdns02.alpha-mail.jp | ||||||
| MX | ampub01.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.1🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub01.alpha-mail.net | ||||||
| MX | ampub02.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.2🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| MX | ampub03.alpha-mail.net ⭐ | ||||||
| A | 216.230.254.3🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| MX | ampub04.alpha-mail.net(50) | ||||||
| A | 216.230.254.4🇺🇸 PSPinc216.230.248.0/21 Pacific Software Publishing, Inc. 1404 140th Place NE Bellevue WA 98007 US | ||||||
| PTR | ampub04.alpha-mail.net | ||||||
| TXT | v=spf1 ip4:157.205.202.0/24 ip4:157.205.203.128/25 ip4:216.230.250.0/24 ip4:2... | ||||||
| SOA | kotetsu.alpha-lt.netpostmaster@alpha-web.ne.jp 2023-08-03 #0 | ||||||
co.jp
| DNSSEC | ⚠️ Not signed | ||||||
| TXT | co.jp. | ||||||
Subdomains
imap.kenb.co.jp |
Same first word
Similar names
DNS History
9 records (8 active, 1 former)
●NSamdns03.alpha-mail.jp2026-07-02 → 2026-07-19 · 3 obs
● 2026-07-02 16:29:54
● 2026-07-19 01:38:56
●NSkotetsu.alpha-lt.net2017-03-07 → 2026-07-19 · 2 obs
● 2026-07-19 01:38:56
●NStsukuba.aics.ne.jp2017-03-07 → 2026-07-19 · 2 obs
● 2026-07-19 01:38:56
●MXampub01.alpha-mail.net2017-03-07 → 2026-07-19 · 2 obs
● 2026-07-19 01:38:56
●MXampub02.alpha-mail.net2017-03-07 → 2026-07-19 · 2 obs
● 2026-07-19 01:38:56
●MXampub03.alpha-mail.net2017-03-07 → 2026-07-19 · 2 obs
● 2026-07-19 01:38:56
●MXampub04.alpha-mail.net2019-03-30 → 2026-07-19 · 3 obs
● 2019-03-30 09:21:04
● 2026-07-19 01:38:56
○A216.230.250.352017-03-07 → 2019-03-30 · 4 obs
● 2019-03-30 09:21:04
○ 2026-07-02 16:29:54
○ 2026-07-19 01:38:56
●A216.230.253.892026-07-02 → 2026-07-19 · 3 obs
● 2026-07-02 16:29:54
● 2026-07-19 01:38:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| jp | a.dns.jp, b.dns.jp, c.dns.jp, d.dns.jp... | 15 records |
| kenb.co.jp | amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp | 1 record |
✅ Authoritative Response
Server:157.205.252.7
NS records: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net, tsukuba.aics.ne.jp
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kenb.co.jp (unsigned zone)
⏱️ Timing
Total: 1564ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.230.253.89 |
| NS | 3 | kotetsu.alpha-lt.net, tsukuba.aics.ne.jp... |
| MX | 4 | ampub02.alpha-mail.net (pri: 10), ampub01.alpha-mail.net (pri: 10)... |
| TXT | 1 | v=spf1 ip4:157.205.202.0/24 ip4:157.205. |
| SOA | 1 | kotetsu.alpha-lt.net postmaster.alpha-we |
📌 Glue Records Collected
Total: 16
In-bailiwick: 15 (a.dns.jp, a.dns.jp, b.dns.jp...)
Out-of-bailiwick: 1 (amdns03.alpha-mail.jp)
Analysis
Hierarchy
imap.kenb.co.jp is a subdomain of kenb.co.jp.
IP Addresses
kenb.co.jp points to a single IP number: 216.230.253.89.
Additional host names — hohraku.co.jp, prism-inc.co.jp, cpa-ide.com and two others — share IP numbers with kenb.co.jp.
Name Servers
kenb.co.jp is served by three name servers: amdns03.alpha-mail.jp, kotetsu.alpha-lt.net and tsukuba.aics.ne.jp.
The name servers of kenb.co.jp overlap at least partially with those of other domains — among them ark-glass.co.jp, kuzunoha.jp, arimax.co.jp and two more.
amdns03.alpha-mail.jp has IP address 216.230.254.112, kotetsu.alpha-lt.net has IP address 157.205.252.6 and tsukuba.aics.ne.jp has IP address 157.205.252.7 — one address each.
Mail Servers
The four mail servers for kenb.co.jp are ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net.
kenb.co.jp shares mail servers — at least in part — with other domains, including tds-1.com, asahi-camera.jp, takao-endo.co.jp and two others.
ampub01.alpha-mail.net, ampub02.alpha-mail.net, ampub03.alpha-mail.net and ampub04.alpha-mail.net each resolve to one IP address: ampub01.alpha-mail.net resolves to 216.230.254.1, ampub02.alpha-mail.net resolves to 216.230.254.2, ampub03.alpha-mail.net resolves to 216.230.254.3 and ampub04.alpha-mail.net resolves to 216.230.254.4.